#include<stdio.h>

int a = 100;

int main(void)
{
	int num1 = 10;
	printf("num1=%d\n", num1);
	
	int num2 = 20;
	int num3 = num1 + num2;
	printf("num3=%d",num3);
	
	printf("\nPlease enter two numbers:");
	
	scanf("%d %d", &num1, &num2);
	//input two numbers
	
	int sum = num1 + num2;
	printf("The sum is %d", sum);
	
	return 0;
}